IPA: /ˈpɛp.sɪn/
KK: /ˈpɛp.sɪn/
A type of enzyme in the stomach that helps break down proteins into smaller pieces called peptides.
Pepsin is essential for digesting the proteins in the food we eat.
Pepsin comes from the Greek word "pepsis" (meaning digestion) and the suffix "-in" (used to denote substances). The word "pepsin" refers to a substance involved in the process of digestion.
Think of 'digestion' ('pepsis') to remember that 'pepsin' is a substance that helps in the digestive process.